diamond files 1.electroplated diamond files is one kind of diamond tool. 2.5 shapes 3.chrome ,nickle, ... Diamond needle filesTechnology:diamond grit was absorbed to the surface of matrix(C45). Feature:wear-resisting,sand and matrix is ... 150#,200#.Usage: (1)Simple sheet glass,ground glass,sandblasting glass,patterned glass,wire glass,hollow glass,laminated glass and glass block.grit size from 80 to 120 ...